diff options
Diffstat (limited to 'drivers/media/video/omap3isp/ispresizer.c')
| -rw-r--r-- | drivers/media/video/omap3isp/ispresizer.c | 1778 |
1 files changed, 0 insertions, 1778 deletions
diff --git a/drivers/media/video/omap3isp/ispresizer.c b/drivers/media/video/omap3isp/ispresizer.c deleted file mode 100644 index d11fb26..0000000 --- a/drivers/media/video/omap3isp/ispresizer.c +++ /dev/null @@ -1,1778 +0,0 @@ -/* - * ispresizer.c - * - * TI OMAP3 ISP - Resizer module - * - * Copyright (C) 2010 Nokia Corporation - * Copyright (C) 2009 Texas Instruments, Inc - * - * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> - * Sakari Ailus <sakari.ailus@iki.fi> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ - -#include <linux/device.h> -#include <linux/mm.h> -#include <linux/module.h> - -#include "isp.h" -#include "ispreg.h" -#include "ispresizer.h" - -/* - * Resizer Constants - */ -#define MIN_RESIZE_VALUE 64 -#define MID_RESIZE_VALUE 512 -#define MAX_RESIZE_VALUE 1024 - -#define MIN_IN_WIDTH 32 -#define MIN_IN_HEIGHT 32 -#define MAX_IN_WIDTH_MEMORY_MODE 4095 -#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES1 1280 -#define MAX_IN_WIDTH_ONTHEFLY_MODE_ES2 4095 -#define MAX_IN_HEIGHT 4095 - -#define MIN_OUT_WIDTH 16 -#define MIN_OUT_HEIGHT 2 -#define MAX_OUT_HEIGHT 4095 - -/* - * Resizer Use Constraints - * "TRM ES3.1, table 12-46" - */ -#define MAX_4TAP_OUT_WIDTH_ES1 1280 -#define MAX_7TAP_OUT_WIDTH_ES1 640 -#define MAX_4TAP_OUT_WIDTH_ES2 3312 -#define MAX_7TAP_OUT_WIDTH_ES2 1650 -#define MAX_4TAP_OUT_WIDTH_3630 4096 -#define MAX_7TAP_OUT_WIDTH_3630 2048 - -/* - * Constants for ratio calculation - */ -#define RESIZE_DIVISOR 256 -#define DEFAULT_PHASE 1 - -/* - * Default (and only) configuration of filter coefficients. - * 7-tap mode is for scale factors 0.25x to 0.5x. - * 4-tap mode is for scale factors 0.5x to 4.0x. - * There shouldn't be any reason to recalculate these, EVER. - */ -static const struct isprsz_coef filter_coefs = { - /* For 8-phase 4-tap horizontal filter: */ - { - 0x0000, 0x0100, 0x0000, 0x0000, - 0x03FA, 0x00F6, 0x0010, 0x0000, - 0x03F9, 0x00DB, 0x002C, 0x0000, - 0x03FB, 0x00B3, 0x0053, 0x03FF, - 0x03FD, 0x0082, 0x0084, 0x03FD, - 0x03FF, 0x0053, 0x00B3, 0x03FB, - 0x0000, 0x002C, 0x00DB, 0x03F9, - 0x0000, 0x0010, 0x00F6, 0x03FA - }, - /* For 8-phase 4-tap vertical filter: */ - { - 0x0000, 0x0100, 0x0000, 0x0000, - 0x03FA, 0x00F6, 0x0010, 0x0000, - 0x03F9, 0x00DB, 0x002C, 0x0000, - 0x03FB, 0x00B3, 0x0053, 0x03FF, - 0x03FD, 0x0082, 0x0084, 0x03FD, - 0x03FF, 0x0053, 0x00B3, 0x03FB, - 0x0000, 0x002C, 0x00DB, 0x03F9, - 0x0000, 0x0010, 0x00F6, 0x03FA - }, - /* For 4-phase 7-tap horizontal filter: */ - #define DUMMY 0 - { - 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY, - 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY, - 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY, - 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY - }, - /* For 4-phase 7-tap vertical filter: */ - { - 0x0004, 0x0023, 0x005A, 0x0058, 0x0023, 0x0004, 0x0000, DUMMY, - 0x0002, 0x0018, 0x004d, 0x0060, 0x0031, 0x0008, 0x0000, DUMMY, - 0x0001, 0x000f, 0x003f, 0x0062, 0x003f, 0x000f, 0x0001, DUMMY, - 0x0000, 0x0008, 0x0031, 0x0060, 0x004d, 0x0018, 0x0002, DUMMY - } - /* - * The dummy padding is required in 7-tap mode because of how the - * registers are arranged physically. - */ - #undef DUMMY -}; - -/* - * __resizer_get_format - helper function for getting resizer format - * @res : pointer to resizer private structure - * @pad : pad number - * @fh : V4L2 subdev file handle - * @which : wanted subdev format - * return zero - */ -static struct v4l2_mbus_framefmt * -__resizer_get_format(struct isp_res_device *res, struct v4l2_subdev_fh *fh, - unsigned int pad, enum v4l2_subdev_format_whence which) -{ - if (which == V4L2_SUBDEV_FORMAT_TRY) - return v4l2_subdev_get_try_format(fh, pad); - else - return &res->formats[pad]; -} - -/* - * __resizer_get_crop - helper function for getting resizer crop rectangle - * @res : pointer to resizer private structure - * @fh : V4L2 subdev file handle - * @which : wanted subdev crop rectangle - */ -static struct v4l2_rect * -__resizer_get_crop(struct isp_res_device *res, struct v4l2_subdev_fh *fh, - enum v4l2_subdev_format_whence which) -{ - if (which == V4L2_SUBDEV_FORMAT_TRY) - return v4l2_subdev_get_try_crop(fh, RESZ_PAD_SINK); - else - return &res->crop.request; -} - -/* - * resizer_set_filters - Set resizer filters - * @res: Device context. - * @h_coeff: horizontal coefficient - * @v_coeff: vertical coefficient - * Return none - */ -static void resizer_set_filters(struct isp_res_device *res, const u16 *h_coeff, - const u16 *v_coeff) -{ - struct isp_device *isp = to_isp_device(res); - u32 startaddr_h, startaddr_v, tmp_h, tmp_v; - int i; - - startaddr_h = ISPRSZ_HFILT10; - startaddr_v = ISPRSZ_VFILT10; - - for (i = 0; i < COEFF_CNT; i += 2) { - tmp_h = h_coeff[i] | - (h_coeff[i + 1] << ISPRSZ_HFILT_COEF1_SHIFT); - tmp_v = v_coeff[i] | - (v_coeff[i + 1] << ISPRSZ_VFILT_COEF1_SHIFT); - isp_reg_writel(isp, tmp_h, OMAP3_ISP_IOMEM_RESZ, startaddr_h); - isp_reg_writel(isp, tmp_v, OMAP3_ISP_IOMEM_RESZ, startaddr_v); - startaddr_h += 4; - startaddr_v += 4; - } -} - -/* - * resizer_set_bilinear - Chrominance horizontal algorithm select - * @res: Device context. - * @type: Filtering interpolation type. - * - * Filtering that is same as luminance processing is - * intended only for downsampling, and bilinear interpolation - * is intended only for upsampling. - */ -static void resizer_set_bilinear(struct isp_res_device *res, - enum resizer_chroma_algo type) -{ - struct isp_device *isp = to_isp_device(res); - - if (type == RSZ_BILINEAR) - isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, - ISPRSZ_CNT_CBILIN); - else - isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, - ISPRSZ_CNT_CBILIN); -} - -/* - * resizer_set_ycpos - Luminance and chrominance order - * @res: Device context. - * @order: order type. - */ -static void resizer_set_ycpos(struct isp_res_device *res, - enum v4l2_mbus_pixelcode pixelcode) -{ - struct isp_device *isp = to_isp_device(res); - - switch (pixelcode) { - case V4L2_MBUS_FMT_YUYV8_1X16: - isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, - ISPRSZ_CNT_YCPOS); - break; - case V4L2_MBUS_FMT_UYVY8_1X16: - isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, - ISPRSZ_CNT_YCPOS); - break; - default: - return; - } -} - -/* - * resizer_set_phase - Setup horizontal and vertical starting phase - * @res: Device context. - * @h_phase: horizontal phase parameters. - * @v_phase: vertical phase parameters. - * - * Horizontal and vertical phase range is 0 to 7 - */ -static void resizer_set_phase(struct isp_res_device *res, u32 h_phase, - u32 v_phase) -{ - struct isp_device *isp = to_isp_device(res); - u32 rgval = 0; - - rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) & - ~(ISPRSZ_CNT_HSTPH_MASK | ISPRSZ_CNT_VSTPH_MASK); - rgval |= (h_phase << ISPRSZ_CNT_HSTPH_SHIFT) & ISPRSZ_CNT_HSTPH_MASK; - rgval |= (v_phase << ISPRSZ_CNT_VSTPH_SHIFT) & ISPRSZ_CNT_VSTPH_MASK; - - isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT); -} - -/* - * resizer_set_luma - Setup luminance enhancer parameters - * @res: Device context. - * @luma: Structure for luminance enhancer parameters. - * - * Algorithm select: - * 0x0: Disable - * 0x1: [-1 2 -1]/2 high-pass filter - * 0x2: [-1 -2 6 -2 -1]/4 high-pass filter - * - * Maximum gain: - * The data is coded in U4Q4 representation. - * - * Slope: - * The data is coded in U4Q4 representation. - * - * Coring offset: - * The data is coded in U8Q0 representation. - * - * The new luminance value is computed as: - * Y += HPF(Y) x max(GAIN, (HPF(Y) - CORE) x SLOP + 8) >> 4. - */ -static void resizer_set_luma(struct isp_res_device *res, - struct resizer_luma_yenh *luma) -{ - struct isp_device *isp = to_isp_device(res); - u32 rgval = 0; - - rgval = (luma->algo << ISPRSZ_YENH_ALGO_SHIFT) - & ISPRSZ_YENH_ALGO_MASK; - rgval |= (luma->gain << ISPRSZ_YENH_GAIN_SHIFT) - & ISPRSZ_YENH_GAIN_MASK; - rgval |= (luma->slope << ISPRSZ_YENH_SLOP_SHIFT) - & ISPRSZ_YENH_SLOP_MASK; - rgval |= (luma->core << ISPRSZ_YENH_CORE_SHIFT) - & ISPRSZ_YENH_CORE_MASK; - - isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_YENH); -} - -/* - * resizer_set_source - Input source select - * @res: Device context. - * @source: Input source type - * - * If this field is set to RESIZER_INPUT_VP, the resizer input is fed from - * Preview/CCDC engine, otherwise from memory. - */ -static void resizer_set_source(struct isp_res_device *res, - enum resizer_input_entity source) -{ - struct isp_device *isp = to_isp_device(res); - - if (source == RESIZER_INPUT_MEMORY) - isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, - ISPRSZ_CNT_INPSRC); - else - isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, - ISPRSZ_CNT_INPSRC); -} - -/* - * resizer_set_ratio - Setup horizontal and vertical resizing value - * @res: Device context. - * @ratio: Structure for ratio parameters. - * - * Resizing range from 64 to 1024 - */ -static void resizer_set_ratio(struct isp_res_device *res, - const struct resizer_ratio *ratio) -{ - struct isp_device *isp = to_isp_device(res); - const u16 *h_filter, *v_filter; - u32 rgval = 0; - - rgval = isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT) & - ~(ISPRSZ_CNT_HRSZ_MASK | ISPRSZ_CNT_VRSZ_MASK); - rgval |= ((ratio->horz - 1) << ISPRSZ_CNT_HRSZ_SHIFT) - & ISPRSZ_CNT_HRSZ_MASK; - rgval |= ((ratio->vert - 1) << ISPRSZ_CNT_VRSZ_SHIFT) - & ISPRSZ_CNT_VRSZ_MASK; - isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT); - - /* prepare horizontal filter coefficients */ - if (ratio->horz > MID_RESIZE_VALUE) - h_filter = &filter_coefs.h_filter_coef_7tap[0]; - else - h_filter = &filter_coefs.h_filter_coef_4tap[0]; - - /* prepare vertical filter coefficients */ - if (ratio->vert > MID_RESIZE_VALUE) - v_filter = &filter_coefs.v_filter_coef_7tap[0]; - else - v_filter = &filter_coefs.v_filter_coef_4tap[0]; - - resizer_set_filters(res, h_filter, v_filter); -} - -/* - * resizer_set_dst_size - Setup the output height and width - * @res: Device context. - * @width: Output width. - * @height: Output height. - * - * Width : - * The value must be EVEN. - * - * Height: - * The number of bytes written to SDRAM must be - * a multiple of 16-bytes if the vertical resizing factor - * is greater than 1x (upsizing) - */ -static void resizer_set_output_size(struct isp_res_device *res, - u32 width, u32 height) -{ - struct isp_device *isp = to_isp_device(res); - u32 rgval = 0; - - dev_dbg(isp->dev, "Output size[w/h]: %dx%d\n", width, height); - rgval = (width << ISPRSZ_OUT_SIZE_HORZ_SHIFT) - & ISPRSZ_OUT_SIZE_HORZ_MASK; - rgval |= (height << ISPRSZ_OUT_SIZE_VERT_SHIFT) - & ISPRSZ_OUT_SIZE_VERT_MASK; - isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_OUT_SIZE); -} - -/* - * resizer_set_output_offset - Setup memory offset for the output lines. - * @res: Device context. - * @offset: Memory offset. - * - * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte - * boundary; the 5 LSBs are read-only. For optimal use of SDRAM bandwidth, - * the SDRAM line offset must be set on a 256-byte boundary - */ -static void resizer_set_output_offset(struct isp_res_device *res, u32 offset) -{ - struct isp_device *isp = to_isp_device(res); - - isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTOFF); -} - -/* - * resizer_set_start - Setup vertical and horizontal start position - * @res: Device context. - * @left: Horizontal start position. - * @top: Vertical start position. - * - * Vertical start line: - * This field makes sense only when the resizer obtains its input - * from the preview engine/CCDC - * - * Horizontal start pixel: - * Pixels are coded on 16 bits for YUV and 8 bits for color separate data. - * When the resizer gets its input from SDRAM, this field must be set - * to <= 15 for YUV 16-bit data and <= 31 for 8-bit color separate data - */ -static void resizer_set_start(struct isp_res_device *res, u32 left, u32 top) -{ - struct isp_device *isp = to_isp_device(res); - u32 rgval = 0; - - rgval = (left << ISPRSZ_IN_START_HORZ_ST_SHIFT) - & ISPRSZ_IN_START_HORZ_ST_MASK; - rgval |= (top << ISPRSZ_IN_START_VERT_ST_SHIFT) - & ISPRSZ_IN_START_VERT_ST_MASK; - - isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_START); -} - -/* - * resizer_set_input_size - Setup the input size - * @res: Device context. - * @width: The range is 0 to 4095 pixels - * @height: The range is 0 to 4095 lines - */ -static void resizer_set_input_size(struct isp_res_device *res, - u32 width, u32 height) -{ - struct isp_device *isp = to_isp_device(res); - u32 rgval = 0; - - dev_dbg(isp->dev, "Input size[w/h]: %dx%d\n", width, height); - - rgval = (width << ISPRSZ_IN_SIZE_HORZ_SHIFT) - & ISPRSZ_IN_SIZE_HORZ_MASK; - rgval |= (height << ISPRSZ_IN_SIZE_VERT_SHIFT) - & ISPRSZ_IN_SIZE_VERT_MASK; - - isp_reg_writel(isp, rgval, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_IN_SIZE); -} - -/* - * resizer_set_src_offs - Setup the memory offset for the input lines - * @res: Device context. - * @offset: Memory offset. - * - * The 5 LSBs are forced to be zeros by the hardware to align on a 32-byte - * boundary; the 5 LSBs are read-only. This field must be programmed to be - * 0x0 if the resizer input is from preview engine/CCDC. - */ -static void resizer_set_input_offset(struct isp_res_device *res, u32 offset) -{ - struct isp_device *isp = to_isp_device(res); - - isp_reg_writel(isp, offset, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INOFF); -} - -/* - * resizer_set_intype - Input type select - * @res: Device context. - * @type: Pixel format type. - */ -static void resizer_set_intype(struct isp_res_device *res, - enum resizer_colors_type type) -{ - struct isp_device *isp = to_isp_device(res); - - if (type == RSZ_COLOR8) - isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, - ISPRSZ_CNT_INPTYP); - else - isp_reg_clr(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_CNT, - ISPRSZ_CNT_INPTYP); -} - -/* - * __resizer_set_inaddr - Helper function for set input address - * @res : pointer to resizer private data structure - * @addr: input address - * return none - */ -static void __resizer_set_inaddr(struct isp_res_device *res, u32 addr) -{ - struct isp_device *isp = to_isp_device(res); - - isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_INADD); -} - -/* - * The data rate at the horizontal resizer output must not exceed half the - * functional clock or 100 MP/s, whichever is lower. According to the TRM - * there's no similar requirement for the vertical resizer output. However - * experience showed that vertical upscaling by 4 leads to SBL overflows (with - * data rates at the resizer output exceeding 300 MP/s). Limiting the resizer - * output data rate to the functional clock or 200 MP/s, whichever is lower, - * seems to get rid of SBL overflows. - * - * The maximum data rate at the output of the horizontal resizer can thus be - * computed with - * - * max intermediate rate <= L3 clock * input height / output height - * max intermediate rate <= L3 clock / 2 - * - * The maximum data rate at the resizer input is then - * - * max input rate <= max intermediate rate * input width / output width - * - * where the input width and height are the resizer input crop rectangle size. - * The TRM doesn't clearly explain if that's a maximum instant data rate or a - * maximum average data rate. - */ -void omap3isp_resizer_max_rate(struct isp_res_device *res, - unsigned int *max_rate) -{ - struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); - const struct v4l2_mbus_framefmt *ofmt = &res->formats[RESZ_PAD_SOURCE]; - unsigned long limit = min(pipe->l3_ick, 200000000UL); - unsigned long clock; - - clock = div_u64((u64)limit * res->crop.active.height, ofmt->height); - clock = min(clock, limit / 2); - *max_rate = div_u64((u64)clock * res->crop.active.width, ofmt->width); -} - -/* - * When the resizer processes images from memory, the driver must slow down read - * requests on the input to at least comply with the internal data rate - * requirements. If the application real-time requirements can cope with slower - * processing, the resizer can be slowed down even more to put less pressure on - * the overall system. - * - * When the resizer processes images on the fly (either from the CCDC or the - * preview module), the same data rate requirements apply but they can't be - * enforced at the resizer level. The image input module (sensor, CCP2 or - * preview module) must not provide image data faster than the resizer can - * process. - * - * For live image pipelines, the data rate is set by the frame format, size and - * rate. The sensor output frame rate must not exceed the maximum resizer data - * rate. - * - * The resizer slows down read requests by inserting wait cycles in the SBL - * requests. The maximum number of 256-byte requests per second can be computed - * as (the data rate is multiplied by 2 to convert from pixels per second to - * bytes per second) - * - * request per second = data rate * 2 / 256 - * cycles per request = cycles per second / requests per second - * - * The number of cycles per second is controlled by the L3 clock, leading to - * - * cycles per request = L3 frequency / 2 * 256 / data rate - */ -static void resizer_adjust_bandwidth(struct isp_res_device *res) -{ - struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); - struct isp_device *isp = to_isp_device(res); - unsigned long l3_ick = pipe->l3_ick; - struct v4l2_fract *timeperframe; - unsigned int cycles_per_frame; - unsigned int requests_per_frame; - unsigned int cycles_per_request; - unsigned int granularity; - unsigned int minimum; - unsigned int maximum; - unsigned int value; - - if (res->input != RESIZER_INPUT_MEMORY) { - isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP, - ISPSBL_SDR_REQ_RSZ_EXP_MASK); - return; - } - - switch (isp->revision) { - case ISP_REVISION_1_0: - case ISP_REVISION_2_0: - default: - granularity = 1024; - break; - - case ISP_REVISION_15_0: - granularity = 32; - break; - } - - /* Compute the minimum number of cycles per request, based on the - * pipeline maximum data rate. This is an absolute lower bound if we - * don't want SBL overflows, so round the value up. - */ - cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1, - pipe->max_rate); - minimum = DIV_ROUND_UP(cycles_per_request, granularity); - - /* Compute the maximum number of cycles per request, based on the - * requested frame rate. This is a soft upper bound to achieve a frame - * rate equal or higher than the requested value, so round the value - * down. - */ - timeperframe = &pipe->max_timeperframe; - - requests_per_frame = DIV_ROUND_UP(res->crop.active.width * 2, 256) - * res->crop.active.height; - cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator, - timeperframe->denominator); - cycles_per_request = cycles_per_frame / requests_per_frame; - - maximum = cycles_per_request / granularity; - - value = max(minimum, maximum); - - dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value); - isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP, - ISPSBL_SDR_REQ_RSZ_EXP_MASK, - value << ISPSBL_SDR_REQ_RSZ_EXP_SHIFT); -} - -/* - * omap3isp_resizer_busy - Checks if ISP resizer is busy. - * - * Returns busy field from ISPRSZ_PCR register. - */ -int omap3isp_resizer_busy(struct isp_res_device *res) -{ - struct isp_device *isp = to_isp_device(res); - - return isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR) & - ISPRSZ_PCR_BUSY; -} - -/* - * resizer_set_inaddr - Sets the memory address of the input frame. - * @addr: 32bit memory address aligned on 32byte boundary. - */ -static void resizer_set_inaddr(struct isp_res_device *res, u32 addr) -{ - res->addr_base = addr; - - /* This will handle crop settings in stream off state */ - if (res->crop_offset) - addr += res->crop_offset & ~0x1f; - - __resizer_set_inaddr(res, addr); -} - -/* - * Configures the memory address to which the output frame is written. - * @addr: 32bit memory address aligned on 32byte boundary. - * Note: For SBL efficiency reasons the address should be on a 256-byte - * boundary. - */ -static void resizer_set_outaddr(struct isp_res_device *res, u32 addr) -{ - struct isp_device *isp = to_isp_device(res); - - /* - * Set output address. This needs to be in its own function - * because it changes often. - */ - isp_reg_writel(isp, addr << ISPRSZ_SDR_OUTADD_ADDR_SHIFT, - OMAP3_ISP_IOMEM_RESZ, ISPRSZ_SDR_OUTADD); -} - -/* - * resizer_print_status - Prints the values of the resizer module registers. - */ -#define RSZ_PRINT_REGISTER(isp, name)\ - dev_dbg(isp->dev, "###RSZ " #name "=0x%08x\n", \ - isp_reg_readl(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_##name)) - -static void resizer_print_status(struct isp_res_device *res) -{ - struct isp_device *isp = to_isp_device(res); - - dev_dbg(isp->dev, "-------------Resizer Register dump----------\n"); - - RSZ_PRINT_REGISTER(isp, PCR); - RSZ_PRINT_REGISTER(isp, CNT); - RSZ_PRINT_REGISTER(isp, OUT_SIZE); - RSZ_PRINT_REGISTER(isp, IN_START); - RSZ_PRINT_REGISTER(isp, IN_SIZE); - RSZ_PRINT_REGISTER(isp, SDR_INADD); - RSZ_PRINT_REGISTER(isp, SDR_INOFF); - RSZ_PRINT_REGISTER(isp, SDR_OUTADD); - RSZ_PRINT_REGISTER(isp, SDR_OUTOFF); - RSZ_PRINT_REGISTER(isp, YENH); - - dev_dbg(isp->dev, "--------------------------------------------\n"); -} - -/* - * resizer_calc_ratios - Helper function for calculating resizer ratios - * @res: pointer to resizer private data structure - * @input: input frame size - * @output: output frame size - * @ratio : return calculated ratios - * return none - * - * The resizer uses a polyphase sample rate converter. The upsampling filter - * has a fixed number of phases that depend on the resizing ratio. As the ratio - * computation depends on the number of phases, we need to compute a first - * approximation and then refine it. - * - * The input/output/ratio relationship is given by the OMAP34xx TRM: - * - * - 8-phase, 4-tap mode (RSZ = 64 ~ 512) - * iw = (32 * sph + (ow - 1) * hrsz + 16) >> 8 + 7 - * ih = (32 * spv + (oh - 1) * vrsz + 16) >> 8 + 4 - * - 4-phase, 7-tap mode (RSZ = 513 ~ 1024) - * iw = (64 * sph + (ow - 1) * hrsz + 32) >> 8 + 7 - * ih = (64 * spv + (oh - 1) * vrsz + 32) >> 8 + 7 - * - * iw and ih are the input width and height after cropping. Those equations need - * to be satisfied exactly for the resizer to work correctly. - * - * The equations can't be easily reverted, as the >> 8 operation is not linear. - * In addition, not all input sizes can be achieved for a given output size. To - * get the highest input size lower than or equal to the requested input size, - * we need to compute the highest resizing ratio that satisfies the following - * inequality (taking the 4-tap mode width equation as an example) - * - * iw >= (32 * sph + (ow - 1) * hrsz + 16) >> 8 - 7 - * - * (where iw is the requested input width) which can be rewritten as - * - * iw - 7 >= (32 * sph + (ow - 1) * hrsz + 16) >> 8 - * (iw - 7) << 8 >= 32 * sph + (ow - 1) * hrsz + 16 - b - * ((iw - 7) << 8) + b >= 32 * sph + (ow - 1) * hrsz + 16 - * - * where b is the value of the 8 least significant bits of the right hand side - * expression of the last inequality. The highest resizing ratio value will be - * achieved when b is equal to its maximum value of 255. That resizing ratio - * value will still satisfy the original inequality, as b will disappear when - * the expression will be shifted right by 8. - * - * The reverted equations thus become - * - * - 8-phase, 4-tap mode - * hrsz = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / (ow - 1) - * vrsz = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / (oh - 1) - * - 4-phase, 7-tap mode - * hrsz = ((iw - 7) * 256 + 255 - 32 - 64 * sph) / (ow - 1) - * vrsz = ((ih - 7) * 256 + 255 - 32 - 64 * spv) / (oh - 1) - * - * The ratios are integer values, and are rounded down to ensure that the - * cropped input size is not bigger than the uncropped input size. - * - * As the number of phases/taps, used to select the correct equations to compute - * the ratio, depends on the ratio, we start with the 4-tap mode equations to - * compute an approximation of the ratio, and switch to the 7-tap mode equations - * if the approximation is higher than the ratio threshold. - * - * As the 7-tap mode equations will return a ratio smaller than or equal to the - * 4-tap mode equations, the resulting ratio could become lower than or equal to - * the ratio threshold. This 'equations loop' isn't an issue as long as the - * correct equations are used to compute the final input size. Starting with the - * 4-tap mode equations ensure that, in case of values resulting in a 'ratio - * loop', the smallest of the ratio values will be used, never exceeding the - * requested input size. - * - * We first clamp the output size according to the hardware capability to avoid - * auto-cropping the input more than required to satisfy the TRM equations. The - * minimum output size is achieved with a scaling factor of 1024. It is thus - * computed using the 7-tap equations. - * - * min ow = ((iw - 7) * 256 - 32 - 64 * sph) / 1024 + 1 - * min oh = ((ih - 7) * 256 - 32 - 64 * spv) / 1024 + 1 - * - * Similarly, the maximum output size is achieved with a scaling factor of 64 - * and computed using the 4-tap equations. - * - * max ow = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / 64 + 1 - * max oh = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1 - * - * The additional +255 term compensates for the round down operation performed - * by the TRM equations when shifting the value right by 8 bits. - * - * We then compute and clamp the ratios (x1/4 ~ x4). Clamping the output size to - * the maximum value guarantees that the ratio value will never be smaller than - * the minimum, but it could still slightly exceed the maximum. Clamping the - * ratio will thus result in a resizing factor slightly larger than the - * requested value. - * - * To accommodate that, and make sure the TRM equations are satisfied exactly, we - * compute the input crop rectangle as the last step. - * - * As if the situation wasn't complex enough, the maximum output width depends - * on the vertical resizing ratio. Fortunately, the output height doesn't - * depend on the horizontal resizing ratio. We can then start by computing the - * output height and the vertical ratio, and then move to computing the output - * width and the horizontal ratio. - */ -static void resizer_calc_ratios(struct isp_res_device *res, - struct v4l2_rect *input, - struct v4l2_mbus_framefmt *output, - struct resizer_ratio *ratio) -{ - struct isp_device *isp = to_isp_device(res); - const unsigned int spv = DEFAULT_PHASE; - const unsigned int sph = DEFAULT_PHASE; - unsigned int upscaled_width; - unsigned int upscaled_height; - unsigned int min_width; - unsigned int min_height; - unsigned int max_width; - unsigned int max_height; - unsigned int width_alignment; - unsigned int width; - unsigned int height; - - /* - * Clamp the output height based on the hardware capabilities and - * compute the vertical resizing ratio. - */ - min_height = ((input->height - 7) * 256 - 32 - 64 * spv) / 1024 + 1; - min_height = max_t(unsigned int, min_height, MIN_OUT_HEIGHT); - max_height = ((input->height - 4) * 256 + 255 - 16 - 32 * spv) / 64 + 1; - max_height = min_t(unsigned int, max_height, MAX_OUT_HEIGHT); - output->height = clamp(output->height, min_height, max_height); - - ratio->vert = ((input->height - 4) * 256 + 255 - 16 - 32 * spv) - / (output->height - 1); - if (ratio->vert > MID_RESIZE_VALUE) - ratio->vert = ((input->height - 7) * 256 + 255 - 32 - 64 * spv) - / (output->height - 1); - ratio->vert = clamp_t(unsigned int, ratio->vert, - MIN_RESIZE_VALUE, MAX_RESIZE_VALUE); - - if (ratio->vert <= MID_RESIZE_VALUE) { - upscaled_height = (output->height - 1) * ratio->vert - + 32 * spv + 16; - height = (upscaled_height >> 8) + 4; - } else { - upscaled_height = (output->height - 1) * ratio->vert - + 64 * spv + 32; - height = (upscaled_height >> 8) + 7; - } - - /* - * Compute the minimum and maximum output widths based on the hardware - * capabilities. The maximum depends on the vertical resizing ratio. - */ - min_width = ((input->width - 7) * 256 - 32 - 64 * sph) / 1024 + 1; - min_width = max_t(unsigned int, min_width, MIN_OUT_WIDTH); - - if (ratio->vert <= MID_RESIZE_VALUE) { - switch (isp->revision) { - case ISP_REVISION_1_0: - max_width = MAX_4TAP_OUT_WIDTH_ES1; - break; - - case ISP_REVISION_2_0: - default: - max_width = MAX_4TAP_OUT_WIDTH_ES2; - break; - - case ISP_REVISION_15_0: - max_width = MAX_4TAP_OUT_WIDTH_3630; - break; - } - } else { - switch (isp->revision) { - case ISP_REVISION_1_0: - max_width = MAX_7TAP_OUT_WIDTH_ES1; - break; - - case ISP_REVISION_2_0: - default: - max_width = MAX_7TAP_OUT_WIDTH_ES2; - break; - - case ISP_REVISION_15_0: - max_width = MAX_7TAP_OUT_WIDTH_3630; - break; - } - } - max_width = min(((input->width - 7) * 256 + 255 - 16 - 32 * sph) / 64 - + 1, max_width); - - /* - * The output width must be even, and must be a multiple of 16 bytes - * when upscaling vertically. Clamp the output width to the valid range. - * Take the alignment into account (the maximum width in 7-tap mode on - * ES2 isn't a multiple of 8) and align the result up to make sure it - * won't be smaller than the minimum. - */ - width_alignment = ratio->vert < 256 ? 8 : 2; - output->width = clamp(output->width, min_width, - max_width & ~(width_alignment - 1)); - output->width = ALIGN(output->width, width_alignment); - - ratio->horz = ((input->width - 7) * 256 + 255 - 16 - 32 * sph) - / (output->width - 1); - if (ratio->horz > MID_RESIZE_VALUE) - ratio->horz = ((input->width - 7) * 256 + 255 - 32 - 64 * sph) - / (output->width - 1); - ratio->horz = clamp_t(unsigned int, ratio->horz, - MIN_RESIZE_VALUE, MAX_RESIZE_VALUE); - - if (ratio->horz <= MID_RESIZE_VALUE) { - upscaled_width = (output->width - 1) * ratio->horz - + 32 * sph + 16; - width = (upscaled_width >> 8) + 7; - } else { - upscaled_width = (output->width - 1) * ratio->horz - + 64 * sph + 32; - width = (upscaled_width >> 8) + 7; - } - - /* Center the new crop rectangle. */ - input->left += (input->width - width) / 2; - input->top += (input->height - height) / 2; - input->width = width; - input->height = height; -} - -/* - * resizer_set_crop_params - Setup hardware with cropping parameters - * @res : resizer private structure - * @crop_rect : current crop rectangle - * @ratio : resizer ratios - * return none - */ -static void resizer_set_crop_params(struct isp_res_device *res, - const struct v4l2_mbus_framefmt *input, - const struct v4l2_mbus_framefmt *output) -{ - resizer_set_ratio(res, &res->ratio); - - /* Set chrominance horizontal algorithm */ - if (res->ratio.horz >= RESIZE_DIVISOR) - resizer_set_bilinear(res, RSZ_THE_SAME); - else - resizer_set_bilinear(res, RSZ_BILINEAR); - - resizer_adjust_bandwidth(res); - - if (res->input == RESIZER_INPUT_MEMORY) { - /* Calculate additional offset for crop */ - res->crop_offset = (res->crop.active.top * input->width + - res->crop.active.left) * 2; - /* - * Write lowest 4 bits of horizontal pixel offset (in pixels), - * vertical start must be 0. - */ - resizer_set_start(res, (res->crop_offset / 2) & 0xf, 0); - - /* - * Set start (read) address for cropping, in bytes. - * Lowest 5 bits must be zero. - */ - __resizer_set_inaddr(res, - res->addr_base + (res->crop_offset & ~0x1f)); - } else { - /* - * Set vertical start line and horizontal starting pixel. - * If the input is from CCDC/PREV, horizontal start field is - * in bytes (twice number of pixels). - */ - resizer_set_start(res, res->crop.active.left * 2, - res->crop.active.top); - /* Input address and offset must be 0 for preview/ccdc input */ - __resizer_set_inaddr(res, 0); - resizer_set_input_offset(res, 0); - } - - /* Set the input size */ - resizer_set_input_size(res, res->crop.active.width, - res->crop.active.height); -} - -static void resizer_configure(struct isp_res_device *res) -{ - struct v4l2_mbus_framefmt *informat, *outformat; - struct resizer_luma_yenh luma = {0, 0, 0, 0}; - - resizer_set_source(res, res->input); - - informat = &res->formats[RESZ_PAD_SINK]; - outformat = &res->formats[RESZ_PAD_SOURCE]; - - /* RESZ_PAD_SINK */ - if (res->input == RESIZER_INPUT_VP) - resizer_set_input_offset(res, 0); - else - resizer_set_input_offset(res, ALIGN(informat->width, 0x10) * 2); - - /* YUV422 interleaved, default phase, no luma enhancement */ - resizer_set_intype(res, RSZ_YUV422); - resizer_set_ycpos(res, informat->code); - resizer_set_phase(res, DEFAULT_PHASE, DEFAULT_PHASE); - resizer_set_luma(res, &luma); - - /* RESZ_PAD_SOURCE */ - resizer_set_output_offset(res, ALIGN(outformat->width * 2, 32)); - resizer_set_output_size(res, outformat->width, outformat->height); - - resizer_set_crop_params(res, informat, outformat); -} - -/* ----------------------------------------------------------------------------- - * Interrupt handling - */ - -static void resizer_enable_oneshot(struct isp_res_device *res) -{ - struct isp_device *isp = to_isp_device(res); - - isp_reg_set(isp, OMAP3_ISP_IOMEM_RESZ, ISPRSZ_PCR, - ISPRSZ_PCR_ENABLE | ISPRSZ_PCR_ONESHOT); -} - -void omap3isp_resizer_isr_frame_sync(struct isp_res_device *res) -{ - /* - * If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun - * condition, the module was paused and now we have a buffer queued - * on the output again. Restart the pipeline if running in continuous - * mode. - */ - if (res->state == ISP_PIPELINE_STREAM_CONTINUOUS && - res->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) { - resizer_enable_oneshot(res); - isp_video_dmaqueue_flags_clr(&res->video_out); - } -} - -static void resizer_isr_buffer(struct isp_res_device *res) -{ - struct isp_pipeline *pipe = to_isp_pipeline(&res->subdev.entity); - struct isp_buffer *buffer; - int restart = 0; - - if (res->state == ISP_PIPELINE_STREAM_STOPPED) - return; - - /* Complete the output buffer and, if reading from memory, the input - * buffer. - */ - buffer = omap3isp_video_buffer_next(&res->video_out); - if (buffer != NULL) { - resizer_set_outaddr(res, buffer->isp_addr); - restart = 1; - } - - pipe->state |= ISP_PIPELINE_IDLE_OUTPUT; - - if (res->input == RESIZER_INPUT_MEMORY) { - buffer = omap3isp_video_buffer_next(&res->video_in); - if (buffer != NULL) - resizer_set_inaddr(res, buffer->isp_addr); - pipe->state |= ISP_PIPELINE_IDLE_INPUT; - } - - if (res->state == ISP_PIPELINE_STREAM_SINGLESHOT) { - if (isp_pipeline_ready(pipe)) - omap3isp_pipeline_set_stream(pipe, - ISP_PIPELINE_STREAM_SINGLESHOT); - } else { - /* If an underrun occurs, the video queue operation handler will - * restart the resizer. Otherwise restart it immediately. - */ - if (restart) - resizer_enable_oneshot(res); - } -} - -/* - * omap3isp_resizer_isr - ISP resizer interrupt handler - * - * Manage the resizer video buffers and configure shadowed and busy-locked - * registers. - */ -void omap3isp_resizer_isr(struct isp_res_device *res) -{ - struct v4l2_mbus_framefmt *informat, *outformat; - - if (omap3isp_module_sync_is_stopping(&res->wait, &res->stopping)) - return; - - if (res->applycrop) { - outformat = __resizer_get_format(res, NULL, RESZ_PAD_SOURCE, - V4L2_SUBDEV_FORMAT_ACTIVE); - informat = __resizer_get_format(res, NULL, RESZ_PAD_SINK, - V4L2_SUBDEV_FORMAT_ACTIVE); - resizer_set_crop_params(res, informat, outformat); - res->applycrop = 0; - } - - resizer_isr_buffer(res); -} - -/* ----------------------------------------------------------------------------- - * ISP video operations - */ - -static int resizer_video_queue(struct isp_video *video, - struct isp_buffer *buffer) -{ - struct isp_res_device *res = &video->isp->isp_res; - - if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) - resizer_set_inaddr(res, buffer->isp_addr); - - /* - * We now have a buffer queued on the output. Despite what the - * TRM says, the resizer can't be restarted immediately. - * Enabling it in one shot mode in the middle of a frame (or at - * least asynchronously to the frame) results in the output - * being shifted randomly left/right and up/down, as if the - * hardware didn't synchronize itself to the beginning of the - * frame correctly. - * - * Restart the resizer on the next sync interrupt if running in - * continuous mode or when starting the stream. - */ - if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - resizer_set_outaddr(res, buffer->isp_addr); - - return 0; -} - -static const struct isp_video_operations resizer_video_ops = { - .queue = resizer_video_queue, -}; - -/* ----------------------------------------------------------------------------- - * V4L2 subdev operations - */ - -/* - * resizer_set_stream - Enable/Disable streaming on resizer subdev - * @sd: ISP resizer V4L2 subdev - * @enable: 1 == Enable, 0 == Disable - * - * The resizer hardware can't be enabled without a memory buffer to write to. - * As the s_stream operation is called in response to a STREAMON call without - * any buffer queued yet, just update the state field and return immediately. - * The resizer will be enabled in resizer_video_queue(). - */ -static int resizer_set_stream(struct v4l2_subdev *sd, int enable) -{ - struct isp_res_device *res = v4l2_get_subdevdata(sd); - struct isp_video *video_out = &res->video_out; - struct isp_device *isp = to_isp_device(res); - struct device *dev = to_device(res); - - if (res->state == ISP_PIPELINE_STREAM_STOPPED) { - if (enable == ISP_PIPELINE_STREAM_STOPPED) - return 0; - - omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_RESIZER); - resizer_configure(res); - resizer_print_status(res); - } - - switch (enable) { - case ISP_PIPELINE_STREAM_CONTINUOUS: - omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE); - if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) { - resizer_enable_oneshot(res); - isp_video_dmaqueue_flags_clr(video_out); - } - break; - - case ISP_PIPELINE_STREAM_SINGLESHOT: - if (res->input == RESIZER_INPUT_MEMORY) - omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_READ); - omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_RESIZER_WRITE); - - resizer_enable_oneshot(res); - break; - - case ISP_PIPELINE_STREAM_STOPPED: - if (omap3isp_module_sync_idle(&sd->entity, &res->wait, - &res->stopping)) - dev_dbg(dev, "%s: module stop timeout.\n", sd->name); - omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_RESIZER_READ | - OMAP3_ISP_SBL_RESIZER_WRITE); - omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_RESIZER); - isp_video_dmaqueue_flags_clr(video_out); - break; - } - - res->state = enable; - return 0; -} - -/* - * resizer_try_crop - mangles crop parameters. - */ -static void resizer_try_crop(const struct v4l2_mbus_framefmt *sink, - const struct v4l2_mbus_framefmt *source, - struct v4l2_rect *crop) -{ - const unsigned int spv = DEFAULT_PHASE; - const unsigned int sph = DEFAULT_PHASE; - - /* Crop rectangle is constrained by the output size so that zoom ratio - * cannot exceed +/-4.0. - */ - unsigned int min_width = - ((32 * sph + (source->width - 1) * 64 + 16) >> 8) + 7; - unsigned int min_height = - ((32 * spv + (source->height - 1) * 64 + 16) >> 8) + 4; - unsigned int max_width = - ((64 * sph + (source->width - 1) * 1024 + 32) >> 8) + 7; - unsigned int max_height = - ((64 * spv + (source->height - 1) * 1024 + 32) >> 8) + 7; - - crop->width = clamp_t(u32, crop->width, min_width, max_width); - crop->height = clamp_t(u32, crop->height, min_height, max_height); - - /* Crop can not go beyond of the input rectangle */ - crop->left = clamp_t(u32, crop->left, 0, sink->width - MIN_IN_WIDTH); - crop->width = clamp_t(u32, crop->width, MIN_IN_WIDTH, - sink->width - crop->left); - crop->top = clamp_t(u32, crop->top, 0, sink->height - MIN_IN_HEIGHT); - crop->height = clamp_t(u32, crop->height, MIN_IN_HEIGHT, - sink->height - crop->top); -} - -/* - * resizer_get_selection - Retrieve a selection rectangle on a pad - * @sd: ISP resizer V4L2 subdevice - * @fh: V4L2 subdev file handle - * @sel: Selection rectangle - * - * The only supported rectangles are the crop rectangles on the sink pad. - * - * Return 0 on success or a negative error code otherwise. - */ -static int resizer_get_selection(struct v4l2_subdev *sd, - struct v4l2_subdev_fh *fh, - struct v4l2_subdev_selection *sel) -{ - struct isp_res_device *res = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format_source; - struct v4l2_mbus_framefmt *format_sink; - struct resizer_ratio ratio; - - if (sel->pad != RESZ_PAD_SINK) - return -EINVAL; - - format_sink = __resizer_get_format(res, fh, RESZ_PAD_SINK, - sel->which); - format_source = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, - sel->which); - - switch (sel->target) { - case V4L2_SEL_TGT_CROP_BOUNDS: - sel->r.left = 0; - sel->r.top = 0; - sel->r.width = INT_MAX; - sel->r.height = INT_MAX; - - resizer_try_crop(format_sink, format_source, &sel->r); - resizer_calc_ratios(res, &sel->r, format_source, &ratio); - break; - - case V4L2_SEL_TGT_CROP: - sel->r = *__resizer_get_crop(res, fh, sel->which); - resizer_calc_ratios(res, &sel->r, format_source, &ratio); - break; - - default: - return -EINVAL; - } - - return 0; -} - -/* - * resizer_set_selection - Set a selection rectangle on a pad - * @sd: ISP resizer V4L2 subdevice - * @fh: V4L2 subdev file handle - * @sel: Selection rectangle - * - * The only supported rectangle is the actual crop rectangle on the sink pad. - * - * FIXME: This function currently behaves as if the KEEP_CONFIG selection flag - * was always set. - * - * Return 0 on success or a negative error code otherwise. - */ -static int resizer_set_selection(struct v4l2_subdev *sd, - struct v4l2_subdev_fh *fh, - struct v4l2_subdev_selection *sel) -{ - struct isp_res_device *res = v4l2_get_subdevdata(sd); - struct isp_device *isp = to_isp_device(res); - struct v4l2_mbus_framefmt *format_sink, *format_source; - struct resizer_ratio ratio; - - if (sel->target != V4L2_SEL_TGT_CROP || - sel->pad != RESZ_PAD_SINK) - return -EINVAL; - - format_sink = __resizer_get_format(res, fh, RESZ_PAD_SINK, - sel->which); - format_source = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, - sel->which); - - dev_dbg(isp->dev, "%s: L=%d,T=%d,W=%d,H=%d,which=%d\n", __func__, - sel->r.left, sel->r.top, sel->r.width, sel->r.height, - sel->which); - - dev_dbg(isp->dev, "%s: input=%dx%d, output=%dx%d\n", __func__, - format_sink->width, format_sink->height, - format_source->width, format_source->height); - - /* Clamp the crop rectangle to the bounds, and then mangle it further to - * fulfill the TRM equations. Store the clamped but otherwise unmangled - * rectangle to avoid cropping the input multiple times: when an - * application sets the output format, the current crop rectangle is - * mangled during crop rectangle computation, which would lead to a new, - * smaller input crop rectangle every time the output size is set if we - * stored the mangled rectangle. - */ - resizer_try_crop(format_sink, format_source, &sel->r); - *__resizer_get_crop(res, fh, sel->which) = sel->r; - resizer_calc_ratios(res, &sel->r, format_source, &ratio); - - if (sel->which == V4L2_SUBDEV_FORMAT_TRY) - return 0; - - res->ratio = ratio; - res->crop.active = sel->r; - - /* - * set_selection can be called while streaming is on. In this case the - * crop values will be set in the next IRQ. - */ - if (res->state != ISP_PIPELINE_STREAM_STOPPED) - res->applycrop = 1; - - return 0; -} - -/* resizer pixel formats */ -static const unsigned int resizer_formats[] = { - V4L2_MBUS_FMT_UYVY8_1X16, - V4L2_MBUS_FMT_YUYV8_1X16, -}; - -static unsigned int resizer_max_in_width(struct isp_res_device *res) -{ - struct isp_device *isp = to_isp_device(res); - - if (res->input == RESIZER_INPUT_MEMORY) { - return MAX_IN_WIDTH_MEMORY_MODE; - } else { - if (isp->revision == ISP_REVISION_1_0) - return MAX_IN_WIDTH_ONTHEFLY_MODE_ES1; - else - return MAX_IN_WIDTH_ONTHEFLY_MODE_ES2; - } -} - -/* - * resizer_try_format - Handle try format by pad subdev method - * @res : ISP resizer device - * @fh : V4L2 subdev file handle - * @pad : pad num - * @fmt : pointer to v4l2 format structure - * @which : wanted subdev format - */ -static void resizer_try_format(struct isp_res_device *res, - struct v4l2_subdev_fh *fh, unsigned int pad, - struct v4l2_mbus_framefmt *fmt, - enum v4l2_subdev_format_whence which) -{ - struct v4l2_mbus_framefmt *format; - struct resizer_ratio ratio; - struct v4l2_rect crop; - - switch (pad) { - case RESZ_PAD_SINK: - if (fmt->code != V4L2_MBUS_FMT_YUYV8_1X16 && - fmt->code != V4L2_MBUS_FMT_UYVY8_1X16) - fmt->code = V4L2_MBUS_FMT_YUYV8_1X16; - - fmt->width = clamp_t(u32, fmt->width, MIN_IN_WIDTH, - resizer_max_in_width(res)); - fmt->height = clamp_t(u32, fmt->height, MIN_IN_HEIGHT, - MAX_IN_HEIGHT); - break; - - case RESZ_PAD_SOURCE: - format = __resizer_get_format(res, fh, RESZ_PAD_SINK, which); - fmt->code = format->code; - - crop = *__resizer_get_crop(res, fh, which); - resizer_calc_ratios(res, &crop, fmt, &ratio); - break; - } - - fmt->colorspace = V4L2_COLORSPACE_JPEG; - fmt->field = V4L2_FIELD_NONE; -} - -/* - * resizer_enum_mbus_code - Handle pixel format enumeration - * @sd : pointer to v4l2 subdev structure - * @fh : V4L2 subdev file handle - * @code : pointer to v4l2_subdev_mbus_code_enum structure - * return -EINVAL or zero on success - */ -static int resizer_enum_mbus_code(struct v4l2_subdev *sd, - struct v4l2_subdev_fh *fh, - struct v4l2_subdev_mbus_code_enum *code) -{ - struct isp_res_device *res = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format; - - if (code->pad == RESZ_PAD_SINK) { - if (code->index >= ARRAY_SIZE(resizer_formats)) - return -EINVAL; - - code->code = resizer_formats[code->index]; - } else { - if (code->index != 0) - return -EINVAL; - - format = __resizer_get_format(res, fh, RESZ_PAD_SINK, - V4L2_SUBDEV_FORMAT_TRY); - code->code = format->code; - } - - return 0; -} - -static int resizer_enum_frame_size(struct v4l2_subdev *sd, - struct v4l2_subdev_fh *fh, - struct v4l2_subdev_frame_size_enum *fse) -{ - struct isp_res_device *res = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt format; - - if (fse->index != 0) - return -EINVAL; - - format.code = fse->code; - format.width = 1; - format.height = 1; - resizer_try_format(res, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); - fse->min_width = format.width; - fse->min_height = format.height; - - if (format.code != fse->code) - return -EINVAL; - - format.code = fse->code; - format.width = -1; - format.height = -1; - resizer_try_format(res, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); - fse->max_width = format.width; - fse->max_height = format.height; - - return 0; -} - -/* - * resizer_get_format - Handle get format by pads subdev method - * @sd : pointer to v4l2 subdev structure - * @fh : V4L2 subdev file handle - * @fmt : pointer to v4l2 subdev format structure - * return -EINVAL or zero on success - */ -static int resizer_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, - struct v4l2_subdev_format *fmt) -{ - struct isp_res_device *res = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format; - - format = __resizer_get_format(res, fh, fmt->pad, fmt->which); - if (format == NULL) - return -EINVAL; - - fmt->format = *format; - return 0; -} - -/* - * resizer_set_format - Handle set format by pads subdev method - * @sd : pointer to v4l2 subdev structure - * @fh : V4L2 subdev file handle - * @fmt : pointer to v4l2 subdev format structure - * return -EINVAL or zero on success - */ -static int resizer_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, - struct v4l2_subdev_format *fmt) -{ - struct isp_res_device *res = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format; - struct v4l2_rect *crop; - - format = __resizer_get_format(res, fh, fmt->pad, fmt->which); - if (format == NULL) - return -EINVAL; - - resizer_try_format(res, fh, fmt->pad, &fmt->format, fmt->which); - *format = fmt->format; - - if (fmt->pad == RESZ_PAD_SINK) { - /* reset crop rectangle */ - crop = __resizer_get_crop(res, fh, fmt->which); - crop->left = 0; - crop->top = 0; - crop->width = fmt->format.width; - crop->height = fmt->format.height; - - /* Propagate the format from sink to source */ - format = __resizer_get_format(res, fh, RESZ_PAD_SOURCE, - fmt->which); - *format = fmt->format; - resizer_try_format(res, fh, RESZ_PAD_SOURCE, format, - fmt->which); - } - - if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { - /* Compute and store the active crop rectangle and resizer - * ratios. format already points to the source pad active - * format. - */ - res->crop.active = res->crop.request; - resizer_calc_ratios(res, &res->crop.active, format, - &res->ratio); - } - - return 0; -} - -/* - * resizer_init_formats - Initialize formats on all pads - * @sd: ISP resizer V4L2 subdevice - * @fh: V4L2 subdev file handle - * - * Initialize all pad formats with default values. If fh is not NULL, try - * formats are initialized on the file handle. Otherwise active formats are - * initialized on the device. - */ -static int resizer_init_formats(struct v4l2_subdev *sd, - struct v4l2_subdev_fh *fh) -{ - struct v4l2_subdev_format format; - - memset(&format, 0, sizeof(format)); - format.pad = RESZ_PAD_SINK; - format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; - format.format.code = V4L2_MBUS_FMT_YUYV8_1X16; - format.format.width = 4096; - format.format.height = 4096; - resizer_set_format(sd, fh, &format); - - return 0; -} - -/* subdev video operations */ -static const struct v4l2_subdev_video_ops resizer_v4l2_video_ops = { - .s_stream = resizer_set_stream, -}; - -/* subdev pad operations */ -static const struct v4l2_subdev_pad_ops resizer_v4l2_pad_ops = { - .enum_mbus_code = resizer_enum_mbus_code, - .enum_frame_size = resizer_enum_frame_size, - .get_fmt = resizer_get_format, - .set_fmt = resizer_set_format, - .get_selection = resizer_get_selection, - .set_selection = resizer_set_selection, -}; - -/* subdev operations */ -static const struct v4l2_subdev_ops resizer_v4l2_ops = { - .video = &resizer_v4l2_video_ops, - .pad = &resizer_v4l2_pad_ops, -}; - -/* subdev internal operations */ -static const struct v4l2_subdev_internal_ops resizer_v4l2_internal_ops = { - .open = resizer_init_formats, -}; - -/* ----------------------------------------------------------------------------- - * Media entity operations - */ - -/* - * resizer_link_setup - Setup resizer connections. - * @entity : Pointer to media entity structure - * @local : Pointer to local pad array - * @remote : Pointer to remote pad array - * @flags : Link flags - * return -EINVAL or zero on success - */ -static int resizer_link_setup(struct media_entity *entity, - const struct media_pad *local, - const struct media_pad *remote, u32 flags) -{ - struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); - struct isp_res_device *res = v4l2_get_subdevdata(sd); - - switch (local->index | media_entity_type(remote->entity)) { - case RESZ_PAD_SINK | MEDIA_ENT_T_DEVNODE: - /* read from memory */ - if (flags & MEDIA_LNK_FL_ENABLED) { - if (res->input == RESIZER_INPUT_VP) - return -EBUSY; - res->input = RESIZER_INPUT_MEMORY; - } else { - if (res->input == RESIZER_INPUT_MEMORY) - res->input = RESIZER_INPUT_NONE; - } - break; - - case RESZ_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: - /* read from ccdc or previewer */ - if (flags & MEDIA_LNK_FL_ENABLED) { - if (res->input == RESIZER_INPUT_MEMORY) - return -EBUSY; - res->input = RESIZER_INPUT_VP; - } else { - if (res->input == RESIZER_INPUT_VP) - res->input = RESIZER_INPUT_NONE; - } - break; - - case RESZ_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: - /* resizer always write to memory */ - break; - - default: - return -EINVAL; - } - - return 0; -} - -/* media operations */ -static const struct media_entity_operations resizer_media_ops = { - .link_setup = resizer_link_setup, - .link_validate = v4l2_subdev_link_validate, -}; - -void omap3isp_resizer_unregister_entities(struct isp_res_device *res) -{ - v4l2_device_unregister_subdev(&res->subdev); - omap3isp_video_unregister(&res->video_in); - omap3isp_video_unregister(&res->video_out); -} - -int omap3isp_resizer_register_entities(struct isp_res_device *res, - struct v4l2_device *vdev) -{ - int ret; - - /* Register the subdev and video nodes. */ - ret = v4l2_device_register_subdev(vdev, &res->subdev); - if (ret < 0) - goto error; - - ret = omap3isp_video_register(&res->video_in, vdev); - if (ret < 0) - goto error; - - ret = omap3isp_video_register(&res->video_out, vdev); - if (ret < 0) - goto error; - - return 0; - -error: - omap3isp_resizer_unregister_entities(res); - return ret; -} - -/* ----------------------------------------------------------------------------- - * ISP resizer initialization and cleanup - */ - -/* - * resizer_init_entities - Initialize resizer subdev and media entity. - * @res : Pointer to resizer device structure - * return -ENOMEM or zero on success - */ -static int resizer_init_entities(struct isp_res_device *res) -{ - struct v4l2_subdev *sd = &res->subdev; - struct media_pad *pads = res->pads; - struct media_entity *me = &sd->entity; - int ret; - - res->input = RESIZER_INPUT_NONE; - - v4l2_subdev_init(sd, &resizer_v4l2_ops); - sd->internal_ops = &resizer_v4l2_internal_ops; - strlcpy(sd->name, "OMAP3 ISP resizer", sizeof(sd->name)); - sd->grp_id = 1 << 16; /* group ID for isp subdevs */ - v4l2_set_subdevdata(sd, res); - sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; - - pads[RESZ_PAD_SINK].flags = MEDIA_PAD_FL_SINK; - pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; - - me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESZ_PADS_NUM, pads, 0); - if (ret < 0) - return ret; - - resizer_init_formats(sd, NULL); - - res->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - res->video_in.ops = &resizer_video_ops; - res->video_in.isp = to_isp_device(res); - res->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3; - res->video_in.bpl_alignment = 32; - res->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - res->video_out.ops = &resizer_video_ops; - res->video_out.isp = to_isp_device(res); - res->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3; - res->video_out.bpl_alignment = 32; - - ret = omap3isp_video_init(&res->video_in, "resizer"); - if (ret < 0) - goto error_video_in; - - ret = omap3isp_video_init(&res->video_out, "resizer"); - if (ret < 0) - goto error_video_out; - - res->video_out.video.entity.flags |= MEDIA_ENT_FL_DEFAULT; - - /* Connect the video nodes to the resizer subdev. */ - ret = media_entity_create_link(&res->video_in.video.entity, 0, - &res->subdev.entity, RESZ_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_entity_create_link(&res->subdev.entity, RESZ_PAD_SOURCE, - &res->video_out.video.entity, 0, 0); - if (ret < 0) - goto error_link; - - return 0; - -error_link: - omap3isp_video_cleanup(&res->video_out); -error_video_out: - omap3isp_video_cleanup(&res->video_in); -error_video_in: - media_entity_cleanup(&res->subdev.entity); - return ret; -} - -/* - * isp_resizer_init - Resizer initialization. - * @isp : Pointer to ISP device - * return -ENOMEM or zero on success - */ -int omap3isp_resizer_init(struct isp_device *isp) -{ - struct isp_res_device *res = &isp->isp_res; - - init_waitqueue_head(&res->wait); - atomic_set(&res->stopping, 0); - return resizer_init_entities(res); -} - -void omap3isp_resizer_cleanup(struct isp_device *isp) -{ - struct isp_res_device *res = &isp->isp_res; - - omap3isp_video_cleanup(&res->video_in); - omap3isp_video_cleanup(&res->video_out); - media_entity_cleanup(&res->subdev.entity); -} |
